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Arrange the following in decreasing order of their basic strength C_(6)H_(5)NH_(2),C_(2)H_(5)NH_(2),(C_(2)H_(5))_(2)NH,NH_(3). |
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Answer» Solution :DUE to +I-effect of the alkyl groups, `(C_(2)H_(5))_(2)NH` is a stronger BASE than `C_(2)H_(5)NH_(2)` and both of these are stronger bases than `NH_(3)`. However, due to delocalization of lone pair of electrons present on nitrogen ver the benzene ring, `C_(6)H_(5)NH_(2)` is a WEAKER base than aliphatic amines and ammonia. Thus, the BASIC strength of the given amines DECREASES in the order: `(C_(2)H_(5))_(2)NH gt C_(2)H_(5)NH_(2) gt NH_(3) gt C_(6)H_(5)NH_(2)`. |
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